Thread: Hard colour anodising
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01-03-2013 #1
Hi all. I have an aluminium target archery scope. Its bare metal that i need to hard anodise in any bright colour (gold, purple, blue, rust/orange or red) so that its weather proof really or has the max corrosion/abrasion resistance possible. If any body on here offers small anodising jobs or can offer any advice or knows any person that does please let me know. Any help or advice appreciated.
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02-03-2013 #2
I do a little home anodising when the weather is suitable (ambient temps) but for proper 'hard' anodising you're going to need a specialist company. Google your local area & I can guarantee there'll be at least 5 or more . . . isn't Banbury in the F1 triangle?
You're going to have to phone 'em up & find one which doesn't have a minimum invoice charge (my regular charges £50min).
P.S. Spin 'em it's a prototype that you're considering for manufacture & 1 or 2 might even offer to do the job as a freebie :-)
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02-03-2013 #3
Doubt it, they have all heard that one before
When someone tries that one on me I charged them double and tell them it will be credited when the other jobs come in. That sorts the genuine folk out.
Thought about asking Fiat for a new van and telling them I might be in the market for 10 more. Didn't work with them either, still had to shell out 14K.John S -
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02-03-2013 #4
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03-03-2013 #5
If you really want hard annodising, then it comes in Black or Dark Grey.
I was doing some reading up on it last week for some potential products, and due to the structure of the annodising, it doesn't take colours. Not that I was interested in the colour aspect, but I did find the explanation interesting.
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03-03-2013 #6
i was tempted to inject liquid butane into a part to keep the temperature low enough for hard anodising, not a wise option at all considering a slight knock on the hanger wires would blow the roof off the shed.... but perfectly ok for mad science purposes :)
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11-03-2013 #7
Think your nearest hard anodising place is in Nuneaton, used them a few times up to 14 yrs ago, not cheap either.
They will do most colours hard anodising but what they call gold/yellow is more like mustard colour same with other colours, they look naff.
Can even get ptfe impregnated hard anodising coloured and would only go for black or a darkish grey. All other colours seemingly look sickly.
For a scope sulphuric will be more than good enough as used on £3k scopes.
Many places will have minimum charge, Parkes in Walsall in 94 was £75+vat per colour. You might find one that will do cash but need to go in personally.
Just had some butt pad bits done in Brum today, dropped in at 8am, ready at 12.15.
Havent done any sulphuric anodising myself for at least 8 years, even done a few hard anodising jobs essentially the same with much lower temp.
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